122011021022221 has 4 divisors (see below), whose sum is σ = 122408451058432. Its totient is φ = 121613590986012.

The previous prime is 122011021022183. The next prime is 122011021022243. The reversal of 122011021022221 is 122220120110221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122011021022221 - 2²¹ = 122011018925069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011021022321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198715017645 + ... + 198715018258.

It is an arithmetic number, because the mean of its divisors is an integer number (30602112764608).

Almost surely, 2^{122011021022221} is an apocalyptic number.

It is an amenable number.

122011021022221 is a deficient number, since it is larger than the sum of its proper divisors (397430036211).

122011021022221 is an equidigital number, since it uses as much as digits as its factorization.

122011021022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397430036210.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122011021022221 its reverse (122220120110221), we get a palindrome (244231141132442).

The spelling of 122011021022221 in words is "one hundred twenty-two trillion, eleven billion, twenty-one million, twenty-two thousand, two hundred twenty-one".